Automobile brake-shoe.



c. S.'SHUMAKER.

AUTOMOBILE BRAKE SHOE. APPLICATION FILED JUNE 30. 1914.

1,136,446. Patented Apr. 20, 1915.

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UNITED STATES PAT. OFFICE.

CHARLES s. SHUMAKER, or JEANNETTE, rnNNsYnvAmA.

AUTOMOBILE sn'exzesnon.

- provide an expansibleband brake especially adapted for use upon automobiles and havmg a two-piece shoe construction which reduces the liability of injury or breaking of the brake parts. j v

A'further object is the provision of such a two-piece brake shoe which is capable of vbeing moreeasily operated and with less strain than the single pieceshoe while at the same time imparting additionalstrength tothe brake. 1

A still furtherobject is the-provision of an advantageous form ofrhinge .connection adjacent tensioning sp .bearing hinge clip between the two cooperating parts of a brake shoe and the said connection being so constructed as to readily allow the, removal of one shoe partin the event of injury and the substitution of a new part therefor.

With these general objects In view and others that will appear as the nature of the invention is better understood, the same consists inthe novel combination and arrangement of parts hereinafter fully described, illustrated in the accompanying drawings and pointed out in the appended claims.

- In'the drawings formin a part of this application and in which %ike designating characters refer to, corresponding parts .throughout the several views Figure 1 is a front elevation of the com plete brake shoe, the operatin cam being shown in section and the devlce detached from the vehicle. Fig. 2 is a plan view of the hinge connection between the brake shoe parts with the shoes broken away and the ring .removed, the view being taken interiorly of the. circular shoe. Fig. 3 is: a sectional view taken through the pivotal connection of the brake shoe parts. Fig. 4 is a perspective view of an end portion of one of the brake shoe parts, the same being partially broken away, and Fig. 5 is a perspective view of the pivot detached.

. Specification of letters Patent.-

Application filed June 30, 1914.- Serial N0. $48,222.

it is to be: broadly .ble circular brake shoe -sion of the springs 15 which opposite hooks. 16 of the said sections and Patented Apr. 20, 1915.

Referring more in detail to the drawings, noted that the brake shoe is of the form "employed in vehicle brakes and inwhich the shoe surrounds the ax e engagement of the. outer curvature of the shoe with a cylindrical housin or casing within which the shoe is mounted and whereby the braking operation is effected by'reason'of such frictional contact between the shoe and housing.

Itis now designed to rovide anexpansiormed in two substantially semi-circular sections 10 hingedtogether by the hinge bolt 11 and provided with a cam 12 hearing between the end faces 13 of the sections and whereby a turningof the cam 12 by im arting a'partial revolution to the cam sha t 14 the shoe sections 10 may be expanded against the tenare secured to normally resiliently hold the sections against the cam 12 and with the frictional faces of the sectionsout of drum or housin and thus in the inoperative position of the" rake. e outer convex faces 17 of the shoe sections are provided with a friction pacln'ng or band 18 formed of any desired material contact with the brake such as fiber or asbestos-while such packing strips 18 are secured to the shoe sections by means of pins or rivets 19 passing through the packings and also through the perforations 20 of the sections and the bosses 21.

The ends of the sections lOopposite to the cam engaging ends 13 are provided with semi-cylindrical bearings 22 and, the pivot bolt 11 is positioned within the bearing so formed and thus provides a hinging together of the said ends of the sections and with .the bolt 11 constituting'the removable pintle'of the hinge. A clip of the form illustrated in Fig. 5 fits beneath the ends of the sections and is received within opposite 'cut away portions 23 of the section ends.

The clip is provided with opposite alining perforations 24 through whlch the bolt 11 extends, while the sides 25 of the clip are provided with serrations 26 which divide the sides into a plurality of bendable ears 27. The hin g ends of the sections are provided wit curved hub portions 28 and through which the aforementioned bearings 22 extend and the ears 27 are adapted to be bent inwardly for inclosing the opposite ends of the two part hub 28. It will thus be seen that the reduced ends of the shoe sections are hingedtogether by means of the providing therewith; the'pintle bolt 11 which is secured in position by'meansof the lock nut 29. It will thus be evident that a two .partbrakeshoe is provided which has its equal'sections hinged together at one point in'the circular shoe while a cam separating means is positioned between the other ends of the sections at 'adiametrically opposlte point upon the shoe. The springs 15 normally hold the shoe sections inoperative while a turning of the cam expands the shoe for operative frictional enga ement of its surface packing 18 with the casing'of the .bra (e.

Whilethe forms of the-invention herein shown" and described are what are believed to be preferable embodiments thereof, it is nevertheless to changes may be made in the form, proportion and details of;construction without departing from the spirit and scope of the invention as set forth'in. the appended claims.

.' What I claim as new is -brake shoe sections, each of which sections hasv a semi-tubular hub at one end thereof,

.inclosing .ends and adjacent to said hubs, a clip be understood that minor 1. In combination with two semi-circular:

clip having openings the sides thereof r? alining with the bearing of said hub and a pint'le bolt secured through said openings a ea ingclip 25 which incloses the ends of the hub 28, while the completehinge is formed "by hub at one end thereof, said sections having 2. A brake shoe comprising two semi-circular sections, each having a semi-tubular opposite cut away portions at their adjacent partially surrounding said-hub and having its sides positioned in saidc'utaway' portions and provided with ears bent inwardly en- .jgaging around said. hub, the sides of said clip provided with alined perforations and I a pintle bolt through said perforations arm I said hub e n .v 3. A brake shoe comprising, two semi-circular sections, semi-tubular hubs upon the adjacent ends of'said sections, and said section ends being cut'awayfupon opposite sides thereof adjacent saidehub, a- U-shaped clip partially surroundingsaid hub and provided with inw ardly bent portions engaging the outer faces of-s'aid hub, the sides of said clip provided with alining openings, and a pintle bolt secured through said openings and through the saidliubs.

, In testimony whereof. I aflix my signature in presence of two witnesses,

Witnesses:

CLARK Surrm H. V." RowAir. v

- QHARLES'SJ SHUMAKER 

